Diamond-mounting.



Toallwlunnit STATES PATENT OFFICE l.

CONRAD BIIGBAUEB, OF DETROIT, MICHIGAN.

DIAMOND-Houma.

concern.' l,

Be it known that I, CONRAD BmGBAUm, a citizen of the United States ofAmerica, residing at Detroit, in the, county of Wayne and State ofMichigan, have invented certain new and useful Im rovements inDiamond-Mount' of which the follow# mg is a specification, referencebeing had therein to the accompanying drawings'. This Invention relatesto diamond mountings, and more particularly to that class of diamondmountmgs or stone'holders used as tools for surfacing, trimming orgrindin emery wheels.

e primary object of my invention is to provide a diamond mounting whichmay be adjusted to hold a diamond or similar stone in a desiredposition, the moun embodying a socket or seat member whic may beadJusted to a desired position prior to permanently ancho a diamond orothe'i` stone in the mounting. Y Another object of my invention istoprovide a moun for stones of various sizes and shape,an to hold astone in such a manner that it may be firmly anchored in its mounting topresent a desired grinding or cutting edge or point. A further object ofmy invention is to provide a diamond mounting wherein the parts areconstructed with a view of reducing the cost of manufacture and at thesame time retaining the features by which safety, accuracy, durabiliyand simplicity of construction are Asecur and with such ends in view myinvention resides inthe novel constructions and arent fof partshereinafter fully descri land then claimed.

Reference will now be had to the draw,- ings, wherein-' l Figurev 1 is alongitudinal sectional view 'of a diamond mounting in condition toreceive la diamond or other stone;

Fig. 2 is a view of the outer end of the mounting;

Bpeeeation of Letten Patent.

application mea man ie, isis. semi no. 84,574.

lcr the surface PatenteaJuiy' ao, 191s.

mond or stone in position and the mounting ready to be filled andnished'Fig..4 is a. similarview of mounting; .l

Fig. 5 is a Vside elevation of the saine; Fig.v 6 is an elevation of amodified form I of mounting, partly broken away and partly in section;

Fig. 7 is a similar view of a further modification of my invention, and

Fi '8 and 9 illustrate a still further mod'v cation of my invention. Indescribing my invention various views above referredto, I desire topoint out that the saine are intended as merely illustrative of exampleswhereby my invention may be -a plied in practice, and I do not confinemy invention to any precise form shown. The following description is ,acompleted by aid of the therefore t'o be broadly construed asiiiclu'ding substitute constructions and arrangement of parts which arethe. obvious equivalent of t ose to be hereinafter referred to.

In th drawings, V1 denotes aholder body having the inner end thereofredud to a form acylindrical shank or stem 2 by which the holder bodymay be conveniently held and positioned relativeto an eine wheel to beground by the 'amond' mounting. 1- .-7

The holder body 1 yhas a lboreor recess 3 with the walls thereof screwthreaded-to receive anv adjustable 4socket member 4. This memberYrovides a seat 5 haviiigthe bottom thereof) open and in communicationwith the bottom of the bore or recess 3, and the outer end of saidmember is formed with a plurality of malleable prongs or lugs 6 adaptedto be bent into engagement with a diamond or stone 7 to retain the saineupon the seat/5 of the socket member: The diamond 7 is of thatcharacterordinarily used for surfacin eme wheels and in its partially cut con'tion it is held upon the seat 5 with aportion thereof protrudingoutwardly at the ends of the pro .or l This isbest shown in Fig. 3,anldgfter t e socket member 4 has been properly posi- -viding clearancefor the protruding portion of the diamond 7,l and side openings orrecesses 10 adapted to accomodate a Spanner wrench or suitableinstrument employed for rotating and seating the cap upon the socketmember 4.

The properly located and anchored socket member is permanently ixedinthe bore or recess 3 by pouring molten brass, aluminum and brass, orother material designated 11,

through the opening 9 of the cap 8 to lill' the lbore or recess 3 andsuch spaces as surround the diamond or stone 7.

lAfter the socket member 4 and its stone has been permanently fixed inthe holder body. 1, the outer end of the holderbody is cut away orground down, as indicated at 12, until, the outer end of the holder bodyis flushA with the convex side of the cap 8, as shown in Fig, 4, andthen the diamond mounting is ready for use. v

The construction just described possesses many advantages compared todiamond mountings now in use,a ln the i'irstyplace, the adjustability oithe socket member t permits ci said socket member being correctlypositioned within the holder body to avoid cutting away or grinding downa great deal of the holder body, and oi course the location of thesocket member depends upon the size and shape l01E the stone heldthereby. Second, the lugs or prongs 6 can be easily bent into engagementwith the diamond or stone without injury' to the same, and when the cap8 is screwed into engagement with the prongs or lugs, said prongs orlugs are further pressed into engagement with facets or portions `of thediamond. Third, the threaded walls of the bore or recess 3 presents aroughened surface on which the molten brass, used as a iiller, mayobtain a firm purchase and thus prevent the socket member fromaccidentally shifting within the holder body.

n Fig. 7 of the drawing, there is illustrated a slight modiiioation ofmy invention wherein a Ashank or -stern 13 is exteriorly screwthreadedand the outer end thereof provided with a socket 14 and prongs or lugs15 adapted to be bent int-o engagement with a stone 16 placed in thesocket 1d. 0n the shank or stem 13 may be screwed a holder body 17 andafter the holder body has been correctly positioned relative to theouter end of the stem, a cap 18, similar to the cap 8, may be screwed inthe detachable holder body 17, and then said holder body and the socket14 providediwith va ller and the maracas holder body ground down. "Thisiorm of diamond mounting permits of the shank or stem 13 beingrepeatedly used and after a iiller is placed in the holder body 18, thestone is held just as firmly as in the preferred form of construction.

Another modiiication of my invention is illustrated in Fig. 6, showing aholder body v or inclination within the recess 20 and held l in suchposition by screws 25 carried by the holder body 19. The screws 25 havethe inner ends thereof pointed or beveled, as at 26, to engage on theprongs or lugs 23 of the socket member 21 and hold the socket member 21so as to center the point or a certain portion of the stone 24 relativeto the holder ,body 19. A iller 27 may be placed in the recess 20 topermanently anchor the socket member 21, the ller also entering therecess 22 and surrounding the screws 25. rhe end 4 of the holder body 19may then be ground down and in some instances portions ci the screws 25may 'be ground in order to expose a desired portion of the stone 24: atthe convex end ci the holder body.

Figs. 8 and 9 illustrate a further modiiication of my invention whereina shank or 'stem 28 has the outer end thereon@ provided with an oblongrecess or socket 29 to receive an oblong stone 3l). This stone may becorrectly positioned by a plurality of radially disposed screws 31, aiiller 32 employed to permanently anchor the stone 30 and then the outerend of the stem or shank ground gown similar to the holder body shown inlt has been found that either of the forms illustrated and describedpractically serve the purpose for which they are intended and it isoptional with a manufacturer as to vwhat type of holder to use whenmountin a diamond; the form of holder greatly opending upon the shapeand nature of the diamond or stone to lbe mounted.

1. A diamond mounting comprising a holder body, a socket member screwedtherein and adapted to hold a diamond a Icap screwed in said holder bodyon said socket member and adapted to co crate therewith in holdin adiamond, an a liller in said holder bo y against said socket member.

2.' A diamondl mounting comprising a holder body, a socket memberscrewed therein, prongs formingpart of said socket I member and ada tedto retain a diamond in said socket mem er, a cap screwed in said holderbody on said prongs, and a. filler adapted to ermanently anchor saidsocket member, said cap and the diamond held by said socket member andcap withinsaid 5 holder body.

3. A method of making a. diamond tool, consisting rst in providing aholder body; with a cavity, then a socket member in whic a diamond ismounted, placing the socket member within the cavity of the holder body,10 and then securing the socket member in the holder body by a ymaterial.

In testimon whereo I aix my signature in presence o two witnwes.

` CONRAD BIRGBAUER. Witnesses:

Km. H, Bum ANNA M. Donn.

